Light Emitting Element Layout for Uniform Display Light Distribution
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Solution Overview
Problem
Existing light emitting devices using LEDs face challenges in achieving uniform light output distribution due to alignment issues, leading to variations in light output efficiency across different regions.
Innovation Solution
A light emitting device is designed with a substrate featuring unit light emitting regions, where first and second light emitting elements are aligned in intersecting directions, connected by electrodes and alignment lines, ensuring uniform alignment and light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light emitting elements are arranged in intersecting directions on the substrate, then light output distribution uniformity is improved, but device structure complexity increases
Solution Approach 1:
The light emitting device is segmented into multiple light emitting elements arranged in different directions (first direction and second direction intersecting on the substrate). This segmentation allows light to be emitted from multiple orientations, improving overall light output distribution uniformity while managing structural complexity through modular arrangement
Solution Approach 2:
The patent transitions from single-direction light emitting elements to multi-directional arrangement by introducing elements in intersecting directions (first direction and second direction). This dimensional change in element orientation enables uniform light distribution across different spatial regions of the substrate
2Manufacturing precision
If alignment lines are added to ensure precise positioning of light emitting elements, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
Alignment lines are pre-formed on the substrate before the light emitting elements are positioned and connected to electrodes. This preliminary action establishes precise reference positions in advance, ensuring accurate placement and connection of light emitting elements to corresponding electrodes, thereby improving manufacturing precision
Solution Approach 2:
Alignment lines serve as intermediary reference structures between the substrate and the light emitting elements. These lines act as mediators that facilitate precise positioning and alignment during the manufacturing process, enabling accurate connection without requiring complex real-time alignment mechanisms
Data Source
AI summary
A light emitting device may include: a substrate including a plurality of unit light emitting regions; at least one first light emitting element having a first end portion and a second end portion in a first direction; at least one second light emitting element having a first end portion and a second end portion in a second direction intersecting the first direction; a first electrode connected to any one of the first and second end portions of each of the first and second light emitting elements and a second electrode connected to the other of the first and second end portions of each of the first and second light emitting elements; a first alignment line extending along the second direction on the substrate, the first alignment line being connected to the first electrode; and a second alignment line connected to the second electrode.